Hunter Boat Shoes
The ballast means heavy bodies that serve to ballast / load an item (boat, blimp, etc. ) in order to move the center of gravity and increase the mass (inertia or weight) of an object. On large ships, the ballast provides stability and / or the driving required to obtain an adequate immersion of the propeller and better quality water. Historically, sailing ships were ballasted with sand. Ships today are with sea water injected into the capacity referred to as ballast water sea diving, spearfishing and diving, divers are often forced to weigh down in order to immerse correctly. The natural buoyancy of the human body associated with that of the neoprene wetsuit tend to maintain the individual on the surface. The ballast, usually made of lead, a weight belt or harness lead, should be sufficient so that the diver can easily immerse themselves or take a decompression stop at 3 meters depth without effort. The ballast is variable depending on many factors such as diving equipment, the thickness of the combination, the volume and type of its power of diving, body density, experience, the salinity of the water, etc. . A typical exercise for determining the required ballast for divers bottle is in the final dive, stay on the surface with the vacuum jacket. The water level must reach the middle of the mask. In order to adjust the weighting, it is then, with assistance of another diver, add or remove weights to progressively refine its buoyancy. The underwater hunters and they usually resolve themselves freedivers ballast to obtain neutral buoyancy at the average depth at which they operate, knowing that for security reasons they are generally not recommended to be sealed too. In order to optimize the weight / volume of ballast, it is often made of lead. These weights are generally small blocks of 500 g, 1 kg, 1. 5 kg and 2 kg. weight belt: belts are about 5 cm wide, which attach with a quick fastening system around the waist. It removes up and shot at will. This type of belt can be fitted with small pockets, such as pouches, which are housed in the leads. bags of shot: more flexible employment, they slip into the pockets provided for this purpose, the buoyancy compensator. A velcro closure system allows them to fall rapidly. Ankle weights: they set bracelets around the ankles and help maintain a horizontal position. They are little used as tiring to use when kicking, which is a factor increasing the oxygen consumption. The dry suit divers use them to keep a neutral attitude of the body. belt: used more frequently by underwater hunters, it generally consists of two ventral and one shot lead plate back to better distribute the ballast and thus relieve the kidneys. professional divers (diver) use for their hunter boat shoes ballast heavily sealed in order to move and work more easily at the bottom. during the descent, if the ballast is too large, the diver will tend to flow and will not necessarily have the time to properly perform its balancing maneuvers. He faces an accident while barotrauma. if the ballast is too large, the diver will need more effort to stay above the bottom and moving, it may consume more air and thus run out at the end of the dive, and it is also to thank you for shortness of breath. if the ballast is not large enough, it can be driven to the surface, exposing it to practice scuba diving decompression sickness, or even a pulmonary barotrauma. during ascent, in addition to the risks mentioned above, increased by the proximity of the surface and greater variation in pressure, the scuba diver can also, in case of lack of ballast failing to take his or her bearings and risk of decompression and decompression sickness due to rapid ascent. In the event of an accident under water during a scuba diving, if the teammate can not back his victim and he relieves his belt (or its weight system), the two divers could being dragged to the surface without being able to control their ascent. Therefore, in any other case, a ballast must be removed at the bottom or risk a "rise ball". For cons, the free divers can in turn without hesitation dump their ballast or that of a teammate in need. Copyright: The text is available under Creative Commons attribution share alike, other conditions may apply. See Terms of Use for more details and credit graphics. If reuse of text on this page, see how to cite authors and include the license. Wikipedia ® is a registered trademark of the Wikimedia Foundation, Inc. . , Charitable organization governed by Section 501 (c) (3) of the Tax Code of the United States. . . .
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